Biomass accumulations and the distribution of nitrogen and phosphorus within three Quercus acutissima stands in central Korea

Jin Noh Nam, Yowhan Son, Hyun Kim Rae, Won Seo Kyung, Woo Koo Jin, Hyeop Park In, Jin Lee Young, Hak Lee Kyeong, Mo Son Yeong

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11 Citations (Scopus)

Abstract

Above- and belowground biomass and nitrogen (N) and phosphorus (P) distribution within three Quercus acutissima stands were investigated in central Korea. The average age (year) and diameter at breast height (DBH, cm) were 10.8 and 7.9 for Stand 1, 38.2 and 17.1 for Stand 2, and 44.0 and 20.7 for Stand 3, respectively. Fifteen trees were destructively harvested for dimension analysis of component biomass (stem wood, stem bark, foliage, branches, and roots) plus N and P concentrations. Total biomass (t ha-1) was 88.7 for Stand 1, 154.9 for Stand 2, and 278.1 for Stand 3 while N and P contents in all tree components (kg ha-1) were 483.3 and 52.2, 697.1 and 55.0, and 1113.9 and 83.7. Nitrogen concentrations were highest in the foliage, followed by the stem bark, branches or roots, and stem wood. In contrast, P concentrations were greatest in the roots, then foliage, branches, stem bark, and stem wood. In general, N and P concentrations in these components significantly decreased with tree age and DBH, while N and P contents significantly increased with age and size. These relationships were stronger for size than for age. Our current data could be utilized to estimate N and P budgets for silvicultural practices, including fertilization, thinning, and harvesting.

Original languageEnglish
Pages (from-to)461-466
Number of pages6
JournalJournal of Plant Biology
Volume50
Issue number4
DOIs
Publication statusPublished - 2007 Aug 31

Keywords

  • Allometric regression equation
  • Nutrient concentration
  • Tree age
  • Tree size

ASJC Scopus subject areas

  • Plant Science

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